The present invention provides a composition for optical three-dimensional modeling that is also excellent in molding accuracy when molded by optical three-dimensional modeling, transparency of a cured product, and mechanical properties. The present invention relates to a composition for optical three-dimensional modeling containing a polymerizable monomer (a), ultraviolet absorbing inorganic particles (b), and a photopolymerization initiator (c).本発明は、光学的立体造形によって成形したときの成形精度、硬化物の透明性及び力学的特性にも優れる光学的立体造形用組成物を提供する。本発明は、重合性単量体（ａ）と、紫外線吸収性無機粒子（ｂ）と、光重合開始剤（ｃ）を含有する、光学的立体造形用組成物に関する。
